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Code d'Examen: 1Z0-874
Nom d'Examen: MYSQL (MySQL 5.0 Database Administrator Certified Professional Exam, Part II)
Questions et réponses: 140 Q&As

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NO.1 Which of the following best describes how the relay log works?
A. It records the times when the slave connects to the master.
B. When a slave receives a change from the master, it is recorded in the relay log first and
processed later.
C. When a slave receives a change from the master, it is processed first and then recorded in the relay
log.
Answer: B

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NO.2 How can the SHOW PROCESSLIST command be helpful when optimizing queries?
A. It shows if a query is using an index or not.
B. It shows how the server processes a query.
C. If checked periodically, it can reveal queries that cause other queries to hang.
D. It shows the percentage of processing power that each query is using on a server.
Answer: C

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NO.3 How can stored routines be used to check for constraints or legality of incoming data?
A. They can make use of the VALIDATE DEFINER setting.
B. They can not be used to check for constraints or legality of data.
C. They can check and only perform an action if the incoming values match a specified value.
Answer: C

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NO.4 Which of the following best describes why InnoDB tables should always have primary keys and
why they should be short?
A. Because InnoDB uses primary keys to locate tables, and shorter keys make quicker lookups.
B. Because InnoDB uses primary keys to locate table rows, and shorter keys make quicker lookups.
C. Because InnoDB stores pointers in a log to all the primary keys and shorter keys make this log smaller.
Answer: B

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NO.5 Which of the following statements are required to create a key cache of 4 MB, assign the MyISAM table
world. City to it and preload the index.?
A. mysql> SET GLOBAL city_cache.key_buffer_size = 4194304;mysql> CACHE INDEX world.City IN
city_cache;mysql> LOAD INDEX INTO CACHE world.City;
B. mysql> ALTER TABLE world.city KEY_CACHE = 4194304;
C. mysql> CREATE CACHE FOR world.City SIZE = 4194304;
D. It is not possible to create a key cache for a specific MyISAM table, only the global key cache can be
used.
Answer: A

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NO.6 Consider the following query:
GRANT ALL ON world.* TO 'web'@'hostname'
What privileges would this give this user?
A. All privileges including GRANT.
B. All privileges except GRANT.
C. SELECT, INSERT, UPDATE and DELETE
D. ALL can not be used when granting privileges.
Answer: B

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NO.7 The stored function year_to_date is created by the 'root'@'localhost' account as follows:
CREATE FUNCTION year_to_date ()
RETURNS DECIMAL(10,2)
SQL SECURITY DEFINER
BEGIN ...
END;
Within the routine body, a number of calculations are made on data in the financials table and the
calculated value is returned. The only account which can access the financials table is 'root'@'localhost'.
If a client connects with the account 'joe'@'localhost' and calls the year_to_date function, what will
happen?
A. The function will always execute as if it was 'root'@'localhost' that invoked it since SQL
SECURITY
DEFINER has been specified.
B. The function will not execute, as 'joe'@'localhost' does not have access to the financials table
C. The function will not execute as SQL SECURITY DEFINER has been specified. It would execute if
instead SQL SECURITY INVOKER had been specified
D. If the account 'joe'@'localhost' has the EXECUTE privilege on year_to_date, the function will complete
successfully
Answer: D

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NO.8 Which of the following statements are true of how access control is based?
A. It is based off of an access control table in the mysql database.
B. It is based off of grant tables in the mysql database.
C. It is based off of an access control list stored in the data directory.
D. It is based off of an access control list stored inside the .frm files of each table.
Answer: B

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NO.9 With replication, what on the master is used to send commands to the slave?
A. The relay log.
B. The binary log.
C. The SQL Thread.
Answer: B

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NO.10 You have been granted SELECT, INSERT and DELETE privileges on the table city in the world
database.
You log in, and exercise all your privileges without any problems.
While you are still connected and doing work, the administrator removes your DELETE privileges and
informs you by mail that you can no longer delete from table city.
Being skeptical, you decided to test your privileges and realize that you still have them all. What is are the
most likely causes of this?
A. The administrator forgot to revoke your UPDATE privilege
B. The administrator forgot to revoke your SELECT privilege
C. The administrator removed the DELETE privilege by performing an UPDATE directly on the
mysql.table_priv table
D. The administrator did not execute FLUSH PRIVILEGES
Answer: D

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NO.11 Which of the following statements about the slow query log is true?
A. The slow query log will always contain just slow queries.
B. The slow query log may not always contain just slow queries.
C. The slow query log always logs more than just slow queries.
Answer: B

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NO.12 Which of the following best describes what the master.info file contains and how it is used?
A. It contains the values from the CHANGE MASTER statement.
B. When the slave restarts it looks for which master to use from this file.
C. It contains information about the master server, its slaves and its configuration.
D. It is used by an administrator to determine what slaves connect to the master, and other information
about the master server.
Answer: D

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NO.13 Consider the following GRANT statement:
GRANT USAGE ON *.* TO 'kofi'@'localhost' IDENTIFIED BY 'password'
What is the implications of executing that statement?
A. Kofi can access all database objects.
B. Kofi can access all his tables.
C. Kofi can display server system and status variables.
D. Kofi can grant privileges to others.
E. Kofi can access all database objects belonging to localhost.
Answer: C

MYSQL   1Z0-874 examen   1Z0-874

NO.14 Given the following MyISAM table structure:
mysql> desc city;
+-------------+----------+------+-----+---------+----------------
+
| Field | Type | Null | Key | Default | Extra
|
+-------------+----------+------+-----+---------+----------------
+
| ID | int(11) | | PRI | NULL | auto_increment
|
| Name | char(35) | | | |
|
| CountryCode | char(3) | | | |
|
| District | char(20) | | | | |
| Population | int(11) | | MUL | 0 | |
+-------------+----------+------+-----+---------+----------------+
and the following SQL statement:
SELECT Population
FROM city
WHERE Population = 10000
ORDER BY Population
LIMIT 5;
Which of the following statements best describes how MySQL optimizer executes the query?
A. The optimizer uses the primary key column ID to read the index values, then uses the index on
Population to filter the results. The optimizer will always choose to use a unique index first, then use a
secondary index if available.
B. The optimizer uses the index on the Population column to search and filter the WHERE clause.
A temporary table is used to perform a filesort on the results, and then only 5 records are returned to the
client.
C. The optimizer uses the index on the Population column to search, filter and sort the Population column,
then returns 5 records to the client. The optimizer does not need to read the data rows, and can return
values from the index only, because the index contains just integer values that form a leftmost prefix for
the key.
D. The optimizer uses the index on the Population column to search, filter and sort the Population column,
and returns 5 records to the client. The optimizer does not need to read the data rows, and can return
values from the index only because only those columns where specified in the
SELECT statement.
E. The optimizer will never read data from disk, since MySQL caches both data and index in the key
buffer.
Answer: D

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NO.15 What are reasons to prefer using GRANT and REVOKE statements over editing the privilege tables
directly?
A. Using GRANT and REVOKE allows the server to figure out the right tables and do all the appropriate
work
B. All grant tables in memory are immediately updated on GRANT and REVOKE
C. Making changes directly to the grant tables, one must remember to execute flush privileges to make
the changes take effect
D. GRANT and REVOKE statements allow you to do more fine-grained tuning of user privileges than
does editing the grant tables directly.
E. None of the above
Answer: B

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NO.16 Privileges for using stored routines can be specified at the following levels:
A. Server-wide
B. Per database
C. Per routine
D. The ability to use stored procedures is not governed by the privilege system.
Answer: A,B,C

MYSQL   1Z0-874 examen   1Z0-874   1Z0-874   certification 1Z0-874

NO.17 Consider the following:
mysql> EXPLAIN SELECT Name FROM Country WHERE Code = 'CAN'\G
*************************** 1. row ***************************
id: 1
select_type: SIMPLE
table: Country
type: const
possible_keys: PRIMARY
key: PRIMARY
key_len: 3
ref: const
rows: 1
Extra:
Which of the following best describes the meaning of the value of the type column?
A. The table has exactly one row.
B. Several rows may be read from the table.
C. Only one row of all its rows need to be read.
Answer: C

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NO.18 Assuming that the account 'joe'@'%' does not already exist on the server, executing the statement
mysql> CREATE USER 'joe'@'%' IDENTIFIED BY 'sakila'
will have the following consequences:
A. The account 'joe'@'%' is created on the server. However, clients cannot connect using this account
until further privileges have been assigned to the account.
B. The account 'joe'@'%' is created on the server. Clients may connect to the server using this account,
but will not be able to access any databases, tables or stored routines
C. The account 'joe'@'%' is created on the server. Clients may connect to the server using this account
and execute stored routines, but will not be able to access any databases or tables
D. Nothing; there is no such command as CREATE USER
Answer: B

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NO.19 For which of the following objects can privileges be specified?
A. Host
B. Global
C. Database
D. Table
E. Column
F. Row
Answer: C

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NO.20 When working with stored routines, which of the following are true in regards to the effect on the
amount of data exchanged between client and server?
A. They may increase the amount of data exchanged.
B. They can help reduce the amount of data exchanged.
C. They have no effect on the amount of data exchanged.
Answer: B

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Code d'Examen: 1Z0-870
Nom d'Examen: MYSQL (MySQL 5.0, 5.1 and 5.5 Certified Associate Exam)
Questions et réponses: 240 Q&As

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NO.1 Adam works as a Database Administrator for Pass4sure.com. The company uses MySQL as its
database. Adam has created a table named Employees in the database. He wants to retrieve the
information of those employees who have at least one person reporting to them. Which of the following
queries will Adam execute to accomplish the task?
A. SELECT employee_id, last_name, job_id, department_id FROM Employees WHERE
employee_id EXISTS (SELECT manager_id WHERE manager_id is NULL);
B. SELECT employee_id, last_name, job_id, department_id FROM Employees HAVING
employee_id IN (SELECT manager_id FROM Employees WHERE manager_id is NOT NULL);
C. SELECT employee_id, last_name, job_id, department_id FROM Employees outer WHERE EXISTS
(SELECT 'x' FROM Employees WHERE manager_id = outer.employee_id);
D. SELECT employee_id, last_name, job_id, department_id FROM Employees WHERE
employee_id IN (SELECT manager_id WHERE manager_id is NOT NULL);
Answer: C

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NO.2 Consider the exhibit given below:
Which of the following queries will return the name of the customer who placed the highest amount of
orders and the total order amount?
A. SELECT CUSTOMER, MAX(UNITPRICE*QUANTITY) AS "TOTAL"
FROM ORDERS
GROUP BY CUSTOMER
/
B. SELECT CUSTOMER, SUM(UNITPRICE*QUANTITY) AS "TOTAL"
FROM ORDERS
WHERE SUM(UNITPRICE*QUANTITY)
=
(SELECT MAX(SUM(UNITPRICE*QUANTITY)
)
FROM ORDERS
GROUP BY CUSTOMER)
GROUP BY CUSTOMER
/
C. SELECT CUSTOMER, SUM(UNITPRICE*QUANTITY) AS "TOTAL"
FROM ORDERS
GROUP BY CUSTOMER
HAVING SUM(UNITPRICE*QUANTITY)
=
(SELECT MAX(SUM(UNITPRICE*QUANTITY)
)
FROM ORDERS
GROUP BY CUSTOMER)
/
D. SELECT CUSTOMER, SUM(UNITPRICE*QUANTITY) AS "TOTAL"
FROM ORDERS
GROUP BY CUSTOMER
HAVING SUM(UNITPRICE*QUANTITY)
=
(SELECT SUM(UNITPRICE*QUANTITY)
FROM ORDERS
GROUP BY CUSTOMER)
/
Answer: C

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NO.3 Which of the following are true about UPDATE statements?
Each correct answer represents a complete solution. Choose all that apply.
A. You can use the WHERE clause to have your update affects a specific set of rows.
B. You use the SET clause to update multiple columns of a table separated by commas.
C. You can use co-related sub query in UPDATE statements to update data from other tables.
D. If you don't use the WHERE clause then the UPDATE will not update any rows in the table.
Answer: A,B,C

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NO.4 Which of the following terms is described in the statement below?
"It is procedural code that is automatically executed in response to certain events on a particular table or
view in a database."
A. Data type
B. Table
C. Datetime data type
D. Database trigger
Answer: D

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NO.5 Which of the following properties of concurrency control refers to the requirement that other operations
cannot access or see the data in an intermediate state during the execution of a transaction?
A. Consistency
B. Durability
C. Atomicity
D. Isolation
Answer: D

MYSQL   1Z0-870 examen   1Z0-870

NO.6 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database.
You have created a table named Employees in the database. You want to create a list of
employees working in the organization, but you do not want to display any duplicate row in the report.
Which of the following statements will help you to accomplish the task?
A. SELECT emp_id, emp_name FROM Employees ORDER BY emp_id;
B. SELECT emp_id, emp_name FROM Employees;
C. SELECT DISTINCT emp_id, emp_name FROM Employees;
D. SELECT emp_id, emp_name FROM Employees GROUP BY emp_id;
Answer: C

MYSQL   1Z0-870 examen   1Z0-870

NO.7 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database.
You have created two tables named Employees and Departments in the database. Now, you want to
display data from both tables. Which of the following actions will you perform to accomplish the task.?
A. Join
B. Table Merge operator
C. HAVING
D. GROUP BY
Answer: A

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NO.8 Fill in the blank with the appropriate word.
A ______specifies that the value of a column (or columns), upon which the index is based, must be
unique.
A. unique index
Answer: A

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NO.9 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as the database
platform. You have created a table named Students in the database. The structure of the table is as
follows:
Stu_ID NUMBER (3) PRIMARY KEY
Stu_Name VARCHAR2 (25) NOT NULL
Fee NUMBER (8, 2)
Class NUMBER (5);
You have executed the following statement for the table "Students":
SELECT e.Stu_Name, m.Fee
FROM Students e, Students m
WHERE e.Stu_ID = m.stu_ID;
Which of the following join types have you used in the above statement?
A. Cross join
B. Equijoin
C. Self join
D. Outer join
Answer: C

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NO.10 Which of the following statements is correct for equijoin used to join two tables named Employees and
Department?
A. SELECT Dept_Name, Emp_Name
FROM Departments d1, Employees e1
ORDER BY Dept_Name, Emp_Name;
B. SELECT D.Dept_Name, E.Emp_Name
FROM Departments d1, Employees e1
HAVING Dept_Name, Emp_Name;
C. SELECT E.Emp_Name, D.Dept_Name
FROM Departments d1, Employees e1
WHERE Dept_No = Dept_No
ORDER BY Dept_Name, Emp_Name;
D. SELECT Dept_Name, Emp_Name
FROM Departments d1, Employees e1
WHERE d1.Dept_No = e1.Dept_No
ORDER BY Dept_Name, Emp_Name;
Answer: D

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NO.11 DRAG DROP
Drag and drop the correct constraint types to their corresponding specifications.
Answer:

NO.12 Which of the following are the types of numeric literals that can be used in arithmetic expressions?
Each correct answer represents a complete solution. Choose all that apply.
A. Numeric
B. Integer
C. Binary
D. Real
Answer: B,D

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NO.13 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database.
You have created a new table named Employees, which keeps all the information of the
employees. You want to add a new row to the Employees table. Which of the following statements will you
use to accomplish the task?
A. INSERT (column1, column2, ...columnN) INTO <table_name> VALUES(value1, value2, ...v alueN);
B. INSERT INTO <table_name>(column1, column2, ...columnN) VALUES(value1 ,value2,
...va lueN);
C. INSERT <table_name>(column1, column2, ...columnN), VALUES(value1, value2, ...valueN );
D. INSERT INTO <table_name>(column1, column2,... columnN), VALUES(value1, value2, ...v alueN);
Answer: B

MYSQL   1Z0-870 examen   1Z0-870 examen

NO.14 Fill in the blank with the appropriate term.
A______ provides a concise and flexible means for matching strings of text,
such as particular characters, words, or patterns of characters.
A. regular expression
Answer: A

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NO.15 Adam works as a Database Administrator for Pass4sure.com. He creates a table named Students.
He wants to create a new table named Class with the help of the Students table. Which of the following
syntaxes will Adam use to accomplish the task?
A. CREATE TABLE Class
INSERT INTO SELECT * FROM Students;
B. CREATE TABLE Class
FROM SELECT * FROM Students;
C. CREATE TABLE Class
(SELECT * FROM Students);
D. CREATE TABLE Class
AS SELECT * FROM Students;
Answer: D

MYSQL examen   certification 1Z0-870   1Z0-870   1Z0-870

NO.16 Which of the following will be true about a table column if you plan to create an index on that column?
Each correct answer represents a complete solution. Choose all that apply.
A. The column is often used in the WHERE clause of SQL statements.
B. The column contains very small number of NULL values.
C. The table is updated frequently.
D. The column should contain a wide range of values.
Answer: A,D

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NO.17 Fill in the blank with the appropriate word.
The ________data type defines a date that is combined with a time of day along with fractional seconds
that is based on a 24-hour clock.
A. datetime
Answer: A

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NO.18 You work as a Database Administrator for Pass4sure.com. The company uses the MySQL database.
You have created a new table named Employees in the database and performed update operation but
you got an error because of the last transaction. Now, you want to terminate the last transaction. Which of
the following commands can you use to accomplish the task?
Each correct answer represents a complete solution. Choose all that apply.
A. ROLLBACK
B. REMOVE
C. DELETE
D. COMMIT
Answer: A,D

MYSQL   1Z0-870 examen   1Z0-870   1Z0-870   1Z0-870

NO.19 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database
development platform. You have created a table named Employees in the database.
You want to display the names of the employees whose salary is more than $5000, but you do not want to
display any duplicate content. Therefore, you have written the following query:
SELECT emp_id, DISTINCT emp_name WHERE salary > 5000
FROM Employees;
Which of the following statements is true about the above query?
A. The statement will display only unique names whose salary is more than $5000.
B. The UNIQUE clause should be used in place of the DISTINCT clause.
C. The statement will give an error.
D. The statement will display those records whose salary is more than $5000.
Answer: C

MYSQL examen   1Z0-870   1Z0-870   1Z0-870 examen

NO.20 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database.
You have written two statements, which are as follows:
1. SELECT DISTINCT OBJECT_TYPE
FROM USER_OBJECTS;
2. SELECT OBJECT_TYPE
FROM ALL_OBJECTS;
Which of the following options explains the difference between the results of these two
statements? Each correct answer represents a complete solution. Choose all that apply.
A. The first statement will display distinct object types that can be accessed by the user.
B. The second statement will display all object types that a user can access.
C. The first statement will display distinct object types owned by a user.
D. The second statement will display all object types owned by a user.
Answer: B,C

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Code d'Examen: 010-002
Nom d'Examen: MYSQL (Certified MySQL Associate (English))
Questions et réponses: 50 Q&As

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NO.1 Which of the following statements will discard the existing database called world?
Select the best response.
A. DELETE DATABASE world
B. DROP DATABASE world
C. REMOVE DATABASE world
D. TRUNCATE DATABASE world
Answer: B

MYSQL examen   certification 010-002   certification 010-002   010-002   certification 010-002

NO.2 Which part of a SELECT statement specifies the tables from which data is to be retrieved?
Select the best response.
A. The SELECT list.
B. The FROM clause.
C. The WHERE clause.
D. The LIMIT clause.
Answer: B

MYSQL examen   010-002   010-002 examen   010-002

NO.3 Which of the following statements best describes the purpose of the SQL WHERE clause?
In SQL statements, the WHERE clause specifies ...
Select the best response.
A. the tables from which data is to be retrieved.
B. a condition to filter for only specific rows.
C. a condition to filter for only specific groups defined by a GROUP BY clause.
D. a number to limit the number of rows that is operated upon by the statement.
Answer: B

MYSQL examen   010-002   certification 010-002   certification 010-002   010-002 examen

NO.4 A MySQL table has ...
Select the best response.
A. zero or more columns, and zero or more rows.
B. zero or more columns, and one or more rows.
C. one or more columns, and zero or more rows.
D. one or more columns, and one or more rows.
Answer: C

certification MYSQL   010-002   010-002

NO.5 The default database contains a table called City. Which of the following statements may be executed
to obtain a statement that could be used to (re-)create the City table?
Select the best response.
A. DESCRIBE City
B. DESCRIBE TABLE City
C. SHOW TABLE City
D. SHOW CREATE TABLE City
Answer: D

MYSQL   certification 010-002   010-002   010-002   010-002   010-002 examen

NO.6 The table Country contains the following rows:
+--------------------------+------------+
| Name | Population |
+--------------------------+------------+
| Nauru | 12000 |
| Turks and Caicos Islands | 17000 |
| Tuvalu | 12000 |
| Wallis and Futuna | 15000 |
+--------------------------+------------+
Which of the following statements will return all rows in the table, sorted by the value in the Population
column?
Select the best response.
A. SELECT Name, Population ASC
FROM Country
B. SELECT Name, ORDER BY Population
FROM Country
C. SELECT Name, Population
FROM Country
GROUP BY Population ASC
D. SELECT Name, Population
FROM Country
ORDER BY Population
Answer: D

MYSQL   010-002   010-002   010-002

NO.7 In the context of database transactions, the atomicity property guarantees that...
Select the best response.
A. during a transaction, rows are processed one at a time.
B. all statements that are executed inside a transaction are immediately committed.
C. all statements that are executed inside a transaction are committed or rolled back as one unit.
D. other transactions cannot see the changes made in other ongoing uncommitted transactions.
Answer: C

MYSQL examen   010-002   certification 010-002   010-002 examen

NO.8 Which statement can be used to list all columns in the City table?
Select the best response.
A. DISPLAY COLUMNS FROM City
B. SHOW COLUMNS FROM City
C. SHOW COLUMNS LIKE 'City'
D. SHOW City COLUMNS
Answer: B

certification MYSQL   010-002   010-002   010-002

NO.9 A table is successfully created by executing the following statement:
CREATE TABLE numbers (
double_number double,
decimal_number decimal(2,1)
)
One row is successfully inserted into the numbers table. At this point, the table contains the following
data:
+---------------+----------------+
| double_number | decimal_number |
+---------------+----------------+
| 1.5 | 2.5 |
+---------------+----------------+
The row is updated by executing the following statement:
UPDATE numbers
SET double_number = double_number + 0.25,
decimal_number = decimal_number + 0.01
Which values are now stored in the double_number and decimal_number columns of the updated row?
Select the best response.
A. 1.8 and 2.5
B. 1.75 and 2.5
C. 1.8 and 2.51
D. 1.75 and 2.51
Answer: B

MYSQL examen   010-002   010-002 examen   010-002

NO.10 Which of the following statements can be used to list all databases that are accessible to the current
user?
Select the best response.
A. LIST DATABASES
B. SHOW DATABASES
C. DISPLAY DATABASES
D. VIEW DATABASES
Answer: B

MYSQL   010-002   010-002

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Code d'Examen: 1Z0-871
Nom d'Examen: MYSQL (MySQL 5.0 Developer Certified Professional Exam, Part I)
Questions et réponses: 69 Q&As

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NO.1 Which of the following are a valid identifier for the user table in the mysql database.?
A. mysql.user
B. `mysql.user`
C. `mysql`.`user`
D. mysql.`user`
Answer: A,C,D

MYSQL examen   1Z0-871   1Z0-871   1Z0-871   1Z0-871

NO.2 Is the following statement true or false? "Each database corresponds to a single directory under data
directory, regardless of what storage engine table uses in the database"
A. true
B. false
Answer: A

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NO.3 Which of the following are true in relation to character set and collation relationships in MySQL?
A. A collation may belong to only one character set.
B. A collation may belong to many character sets.
C. A character set may have only one collation.
D. A character set may have many collations.
Answer: A,D

MYSQL examen   certification 1Z0-871   certification 1Z0-871   1Z0-871

NO.4 In non-strict mode, assuming that the table city does not already exist and you execute the following
sequence of commands: CREATE TABLE city (city_name CHAR(5)) INSERT INTO city (city_name)
VALUES ('NEW YORK'), ('TOKYO'), (23+345), ('LONDON') -- Ignoring any errors or warnings that may be
issued, which values are now in the table?
A. 'NEW YORK', 'TOKYO', '23+345', 'LONDON'
B. 'NEW Y', 'TOKYO', '23+34', 'LONDO'
C. 'NEW YORK', 'TOKYO', ' ', 'LONDON'
D. 'NEW Y', 'TOKYO', '368', 'LONDO'
E. 'NEW YORK', 'TOKYO', '368', 'LONDON'
Answer: D

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NO.5 Consider the following:
Which of the quoted values below will be returned for the name field in the SELECT results?
A. ' Tom'
B. ' Tom '
C. 'Tom'
D. 'Tom '
Answer: B

MYSQL   1Z0-871   certification 1Z0-871   1Z0-871

NO.6 Which of the following statements will return a list of all of the databases with a name that starts with
'pro'?
A. LIST DATABASES WHERE NAME LIKE 'pro%'
B. SHOW DATABASES WHERE NAME LIKE 'pro%'
C. SELECT DATABASES WHERE NAME LIKE 'pro%'
D. LIST DATABASES LIKE 'pro%'
E. SHOW DATABASES LIKE 'pro%'
F. SELECT DATABASES LIKE 'pro%'
Answer: E

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NO.7 Which of the following statements will provide a list of all of the databases with a name that starts with
'world'?
A. SELECT SCHEMA_NAME AS `Database` FROM INFORMATION_SCHEMA.SCHEMATA
WHERE SCHEMA_NAME LIKE 'world%'
B. SELECT SCHEMA_NAME AS `Database` FROM SCHEMATA_INFORMATION.SCHEMATA
WHERE SCHEMA_NAME LIKE 'world%'
C. SELECT NAME AS `Database` FROM INFORMATION_SCHEMA.DATABASE WHERE NAME
LIKE 'world%'
D. SELECT NAME AS `Database` FROM SCHEMATA_INFORMATION.DATABASE WHERE
NAME LIKE 'world%'
Answer: A

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NO.8 You want to create two databases, test and Test. Which of the following statements is true?
A. You can create both databases because database names in MySQL are case sensitive.
B. You can create both databases when your operating system supports case sensitive directory names.
C. You can create both databases when you quote delimited the database names like `test` and `Test`.
D. You can create both databases since t and T are different in the ASCII character set.
Answer: B

MYSQL examen   1Z0-871   1Z0-871   1Z0-871   1Z0-871

NO.9 Which of the following statements are true? Databases don't have a default character set or collation.
A. Databases don't have a default character set or collation.
B. Database have a default character set and a default collation.
C. When creating a table within a database without specifying a character set and a collation, the default
character set and collation from the database are being used.
D. If a default character set and collation are defined for a database, settings for tables defined in that
database will be ignored.
Answer: C,D

MYSQL   1Z0-871   certification 1Z0-871

NO.10 Ignoring any warnings that may be issued, which of the following statements will delete the `world`
database and its entire contents on execution, but return no error if it doesn't exist?
A. DROP DATABASE `world` IGNORE ERRORS
B. DROP IF EXISTS DATABASE `world`
C. DROP DATABASE IF EXISTS `world`
D. DELETE DATABASE `world` IGNORE ERRORS
E. DELETE IF EXISTS DATABASE `world`
F. DELETE DATABASE IF EXISTS `world`
Answer: C

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Code d'Examen: 1Z0-870

Nom d'Examen: MYSQL (MySQL 5.0, 5.1 and 5.5 Certified Associate Exam)

Questions et réponses: 240 Q&As

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NO.1 Adam works as a Database Administrator for Pass4sure.com. The company uses MySQL as its
database. Adam has created a table named Employees in the database. He wants to retrieve the
information of those employees who have at least one person reporting to them. Which of the following
queries will Adam execute to accomplish the task?
A. SELECT employee_id, last_name, job_id, department_id FROM Employees WHERE
employee_id EXISTS (SELECT manager_id WHERE manager_id is NULL);
B. SELECT employee_id, last_name, job_id, department_id FROM Employees HAVING
employee_id IN (SELECT manager_id FROM Employees WHERE manager_id is NOT NULL);
C. SELECT employee_id, last_name, job_id, department_id FROM Employees outer WHERE EXISTS
(SELECT 'x' FROM Employees WHERE manager_id = outer.employee_id);
D. SELECT employee_id, last_name, job_id, department_id FROM Employees WHERE
employee_id IN (SELECT manager_id WHERE manager_id is NOT NULL);
Answer: C

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NO.2 You work as a Database Administrator for Pass4sure.com. The company uses the MySQL database.
You have created a new table named Employees in the database and performed update operation but
you got an error because of the last transaction. Now, you want to terminate the last transaction. Which of
the following commands can you use to accomplish the task?
Each correct answer represents a complete solution. Choose all that apply.
A. ROLLBACK
B. REMOVE
C. DELETE
D. COMMIT
Answer: A,D

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NO.3 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database.
You have created two tables named Employees and Departments in the database. Now, you want to
display data from both tables. Which of the following actions will you perform to accomplish the task.?
A. Join
B. Table Merge operator
C. HAVING
D. GROUP BY
Answer: A

MYSQL examen   1Z0-870   certification 1Z0-870   1Z0-870   1Z0-870

NO.4 Fill in the blank with the appropriate word.
The ________data type defines a date that is combined with a time of day along with fractional seconds
that is based on a 24-hour clock.
A. datetime
Answer: A

MYSQL examen   1Z0-870   1Z0-870   1Z0-870   1Z0-870

NO.5 Consider the exhibit given below:
Which of the following queries will return the name of the customer who placed the highest amount of
orders and the total order amount?
A. SELECT CUSTOMER, MAX(UNITPRICE*QUANTITY) AS "TOTAL"
FROM ORDERS
GROUP BY CUSTOMER
/
B. SELECT CUSTOMER, SUM(UNITPRICE*QUANTITY) AS "TOTAL"
FROM ORDERS
WHERE SUM(UNITPRICE*QUANTITY)
=
(SELECT MAX(SUM(UNITPRICE*QUANTITY)
)
FROM ORDERS
GROUP BY CUSTOMER)
GROUP BY CUSTOMER
/
C. SELECT CUSTOMER, SUM(UNITPRICE*QUANTITY) AS "TOTAL"
FROM ORDERS
GROUP BY CUSTOMER
HAVING SUM(UNITPRICE*QUANTITY)
=
(SELECT MAX(SUM(UNITPRICE*QUANTITY)
)
FROM ORDERS
GROUP BY CUSTOMER)
/
D. SELECT CUSTOMER, SUM(UNITPRICE*QUANTITY) AS "TOTAL"
FROM ORDERS
GROUP BY CUSTOMER
HAVING SUM(UNITPRICE*QUANTITY)
=
(SELECT SUM(UNITPRICE*QUANTITY)
FROM ORDERS
GROUP BY CUSTOMER)
/
Answer: C

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NO.6 Which of the following will be true about a table column if you plan to create an index on that column?
Each correct answer represents a complete solution. Choose all that apply.
A. The column is often used in the WHERE clause of SQL statements.
B. The column contains very small number of NULL values.
C. The table is updated frequently.
D. The column should contain a wide range of values.
Answer: A,D

MYSQL   1Z0-870   certification 1Z0-870   1Z0-870 examen

NO.7 DRAG DROP
Drag and drop the correct constraint types to their corresponding specifications.
Answer:

NO.8 Which of the following terms is described in the statement below?
"It is procedural code that is automatically executed in response to certain events on a particular table or
view in a database."
A. Data type
B. Table
C. Datetime data type
D. Database trigger
Answer: D

MYSQL   1Z0-870 examen   certification 1Z0-870

NO.9 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as the database
platform. You have created a table named Students in the database. The structure of the table is as
follows:
Stu_ID NUMBER (3) PRIMARY KEY
Stu_Name VARCHAR2 (25) NOT NULL
Fee NUMBER (8, 2)
Class NUMBER (5);
You have executed the following statement for the table "Students":
SELECT e.Stu_Name, m.Fee
FROM Students e, Students m
WHERE e.Stu_ID = m.stu_ID;
Which of the following join types have you used in the above statement?
A. Cross join
B. Equijoin
C. Self join
D. Outer join
Answer: C

MYSQL   certification 1Z0-870   certification 1Z0-870   1Z0-870

NO.10 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database.
You have created a table named Employees in the database. You want to create a list of
employees working in the organization, but you do not want to display any duplicate row in the report.
Which of the following statements will help you to accomplish the task?
A. SELECT emp_id, emp_name FROM Employees ORDER BY emp_id;
B. SELECT emp_id, emp_name FROM Employees;
C. SELECT DISTINCT emp_id, emp_name FROM Employees;
D. SELECT emp_id, emp_name FROM Employees GROUP BY emp_id;
Answer: C

MYSQL   1Z0-870   1Z0-870 examen

NO.11 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database.
You have written two statements, which are as follows:
1. SELECT DISTINCT OBJECT_TYPE
FROM USER_OBJECTS;
2. SELECT OBJECT_TYPE
FROM ALL_OBJECTS;
Which of the following options explains the difference between the results of these two
statements? Each correct answer represents a complete solution. Choose all that apply.
A. The first statement will display distinct object types that can be accessed by the user.
B. The second statement will display all object types that a user can access.
C. The first statement will display distinct object types owned by a user.
D. The second statement will display all object types owned by a user.
Answer: B,C

MYSQL   certification 1Z0-870   1Z0-870   certification 1Z0-870

NO.12 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database
development platform. You have created a table named Employees in the database.
You want to display the names of the employees whose salary is more than $5000, but you do not want to
display any duplicate content. Therefore, you have written the following query:
SELECT emp_id, DISTINCT emp_name WHERE salary > 5000
FROM Employees;
Which of the following statements is true about the above query?
A. The statement will display only unique names whose salary is more than $5000.
B. The UNIQUE clause should be used in place of the DISTINCT clause.
C. The statement will give an error.
D. The statement will display those records whose salary is more than $5000.
Answer: C

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NO.13 Fill in the blank with the appropriate word.
A ______specifies that the value of a column (or columns), upon which the index is based, must be
unique.
A. unique index
Answer: A

MYSQL examen   1Z0-870   1Z0-870 examen   1Z0-870 examen

NO.14 Adam works as a Database Administrator for Pass4sure.com. He creates a table named Students.
He wants to create a new table named Class with the help of the Students table. Which of the following
syntaxes will Adam use to accomplish the task?
A. CREATE TABLE Class
INSERT INTO SELECT * FROM Students;
B. CREATE TABLE Class
FROM SELECT * FROM Students;
C. CREATE TABLE Class
(SELECT * FROM Students);
D. CREATE TABLE Class
AS SELECT * FROM Students;
Answer: D

MYSQL   1Z0-870   1Z0-870   1Z0-870

NO.15 Which of the following properties of concurrency control refers to the requirement that other operations
cannot access or see the data in an intermediate state during the execution of a transaction?
A. Consistency
B. Durability
C. Atomicity
D. Isolation
Answer: D

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NO.16 Fill in the blank with the appropriate term.
A______ provides a concise and flexible means for matching strings of text,
such as particular characters, words, or patterns of characters.
A. regular expression
Answer: A

certification MYSQL   certification 1Z0-870   1Z0-870

NO.17 Which of the following are true about UPDATE statements?
Each correct answer represents a complete solution. Choose all that apply.
A. You can use the WHERE clause to have your update affects a specific set of rows.
B. You use the SET clause to update multiple columns of a table separated by commas.
C. You can use co-related sub query in UPDATE statements to update data from other tables.
D. If you don't use the WHERE clause then the UPDATE will not update any rows in the table.
Answer: A,B,C

MYSQL   certification 1Z0-870   1Z0-870

NO.18 Which of the following statements is correct for equijoin used to join two tables named Employees and
Department?
A. SELECT Dept_Name, Emp_Name
FROM Departments d1, Employees e1
ORDER BY Dept_Name, Emp_Name;
B. SELECT D.Dept_Name, E.Emp_Name
FROM Departments d1, Employees e1
HAVING Dept_Name, Emp_Name;
C. SELECT E.Emp_Name, D.Dept_Name
FROM Departments d1, Employees e1
WHERE Dept_No = Dept_No
ORDER BY Dept_Name, Emp_Name;
D. SELECT Dept_Name, Emp_Name
FROM Departments d1, Employees e1
WHERE d1.Dept_No = e1.Dept_No
ORDER BY Dept_Name, Emp_Name;
Answer: D

MYSQL   1Z0-870   1Z0-870

NO.19 You work as a Database Administrator for Pass4sure.com. The company uses MySQL as its database.
You have created a new table named Employees, which keeps all the information of the
employees. You want to add a new row to the Employees table. Which of the following statements will you
use to accomplish the task?
A. INSERT (column1, column2, ...columnN) INTO <table_name> VALUES(value1, value2, ...v alueN);
B. INSERT INTO <table_name>(column1, column2, ...columnN) VALUES(value1 ,value2,
...va lueN);
C. INSERT <table_name>(column1, column2, ...columnN), VALUES(value1, value2, ...valueN );
D. INSERT INTO <table_name>(column1, column2,... columnN), VALUES(value1, value2, ...v alueN);
Answer: B

MYSQL examen   1Z0-870   1Z0-870 examen   1Z0-870   1Z0-870

NO.20 Which of the following are the types of numeric literals that can be used in arithmetic expressions?
Each correct answer represents a complete solution. Choose all that apply.
A. Numeric
B. Integer
C. Binary
D. Real
Answer: B,D

MYSQL examen   1Z0-870   1Z0-870   1Z0-870 examen   1Z0-870

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